Led display device and method of controlling the same

Abstract

A light emitting diode (LED) display device according to one embodiment of the present invention includes a plurality of LED sub-pixels, N channel groups configured to supply a current to the plurality of LED sub-pixels, and M scan groups configured to perform a scanning operation. Particularly, the M scan groups include, for example, controllers, each of which corresponds to one preset scan line.

What is claimed is: 
     
         1 . A light emitting diode (LED) display device comprising:
 a plurality of LED sub-pixels;   N channel groups configured to supply a current to the plurality of LED sub-pixels; and   M scan groups configured to perform a scanning operation,   wherein the M scan groups include controllers, each of which corresponds to one preset scan line.   
     
     
         2 . The LED display device of  claim 1 , wherein the controller further includes a first voltage regulator for setting a first voltage level and a second voltage regulator for setting a second voltage level. 
     
     
         3 . The LED display device of  claim 2 , wherein the first voltage regulator is used for setting a low-gray voltage level while the second voltage regulator is used for setting a scan terminal-off voltage. 
     
     
         4 . The LED display device of  claim 3 , wherein the controller further includes:
 a first switch configured to determine whether a voltage supplied through the first voltage regulator is transmitted through a specific scan line.   
     
     
         5 . The LED display device of  claim 4 , wherein the controller further includes:
 a second switch configured to determine whether a voltage supplied through the second voltage regulator is transmitted through the specific scan line.   
     
     
         6 . The LED display device of  claim 5 , wherein the first switch and the second switch include at least one PWM switch. 
     
     
         7 . The LED display device of  claim 6 , wherein the M scan groups include at least a first scan line, a second scan line, and a third scan line. 
     
     
         8 . The LED display device of  claim 7 , wherein, when the first scan line is in a turned-on state, the second scan line and the third scan line are in a turned-off state. 
     
     
         9 . The LED display device of  claim 8 , wherein both a voltage supplied through a 1-1 voltage regulator and a voltage supplied through a 2-1 voltage regulator are supplied through the second scan line. 
     
     
         10 . The LED display device of  claim 9 , wherein both a voltage supplied through a 1-2 voltage regulator and a voltage supplied through a 2-2 voltage regulator are supplied through the third scan line. 
     
     
         11 . A method of controlling a light emitting diode (LED) display device, comprising:
 supplying a current to a plurality of LED sub-pixels using N channel groups; and   performing a scanning operation using M scan groups,   wherein the M scan groups include controllers, each of which corresponds to one preset scan line.   
     
     
         12 . The method of  claim 11 , wherein the controller further includes a first voltage regulator for setting a first voltage level and a second voltage regulator for setting a second voltage level. 
     
     
         13 . The method of  claim 12 , wherein the first voltage regulator is used for setting a low-gray voltage level while the second voltage regulator is used for setting a scan terminal-off voltage. 
     
     
         14 . The method of  claim 13 , wherein the controller further includes:
 a first switch configured to determine whether a voltage supplied through the first voltage regulator is transmitted through a specific scan line.   
     
     
         15 . The method of  claim 14 , wherein the controller further includes:
 a second switch configured to determine whether a voltage supplied through the second voltage regulator is transmitted through the specific scan line.   
     
     
         16 . The method of  claim 15 , wherein the first switch and the second switch include at least one PWM switch. 
     
     
         17 . The method of  claim 16 , wherein the M scan groups include at least a first scan line, a second scan line, and a third scan line. 
     
     
         18 . The method of  claim 17 , wherein, when the first scan line is in a turned-on state, the second scan line and the third scan line are in a turned-off state. 
     
     
         19 . The method of  claim 18 , wherein both a voltage supplied through a 1-1 voltage regulator and a voltage supplied through a 2-1 voltage regulator are supplied through the second scan line. 
     
     
         20 . The method of  claim 19 , wherein both a voltage supplied through a 1-2 voltage regulator and a voltage supplied through a 2-2 voltage regulator are supplied through the third scan line.